"This site has been detected as an invalid domain for the game. Please contact the developer to unlock the domain"
It happens when there are network issues :( ... can you try refeshing? I have other options, sorry for the inconvenince but the lock system is still in beta version... you can also play here:
http://imcsw.com/ConstructGamesDemo/BunnyBanana/
https://www.kongregate.com/games/TristanMX/weird-bunny-banana/